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A chemistry student needs to standardize a fresh solution of sodium hydroxide. She carefully weighs out 0.438 g of oxalic acid (H2C2O4), a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in 0.250 L of distilled water. The student then titrates the oxalic acid solution with her sodium hydroxide solution. When the titration reaches the equivalence point, the student finds she has used 0.1265 L of sodium hydroxide solution. Calculate the molarity of the student's sodium hydroxide solution.
An equilibrium mixture contains 0.750 mol of each of the products (carbon dioxide and hydrogen gas) and 0.200 mol of each of the reactants (carbon monoxide and water vapor) in a 1.00-L container.
What is the pH at the equivalence point when 100.00 mL of a 0.200 M solution of acetic acid (CH3COOH) is titrated with 0.10 M NaOH to its end point?
A sample of water 53 g with a temperature of thirty six degree celsius is combined to 250 grams of H 2 O at 91 degree Celsius in an insulated container. Determine the final temperature after thermal equilibrium is reached?
Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.120 M HClO(aq) with 0.120 M KOH(aq).
Iron sulfide, FeS, is a sparingly soluble salt with a Ksp of 6.3 x 10^-18. Calculate the molar solubility of iron sulfide in a solution that is saturated with hydrosulfuric acid, H2S ( [H2S] = 0.1 M) and has a pH of 2.0. Ka1 = 8.9 x 10^-8 and Ka2 ..
What range of magnetic field strength would be required to cover the mass range between 16 and 625, for singly charged ions, if the accelerating voltage is held constant?
What is the activation energy for this reaction? a) 112 kJ/mol. b) 56 kJ/mol. c) 28 kJ/mol. d) 336 kJ/mol. e) 448 kJ/mol.
Calculate the pH at the following points a. Before Titration b. After the addition of 5.00mL of NaOH c. After the addition of 25.00mL of NaOH d. After the addition of 50.00mL of NaOH e. After the addition of 5.00mL of NaOH
If the average collection period is 55 days, what is the receivables turnover?
If cadmium metal and the Fe(III) ion are mixed in aqueous solution, a solution containing Cd(II) and Fe(II) results. The balanced equation for this process is
using all atoms and bond structure, show an ionization reaction for benzoic acid
Calculate the percent manganese in the sample as Mn3O4 (only part or none of the manganese may exist in this form, but we can make the calculations on the assumption that it does)
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